byEncyclopaedia Britannica Educational Corporation
Demonstrates basic methods for isolating one element from other elements. Experiments include: the reaction of sodium peroxide and water, catalytic decomposition of hydrogen peroxide, catalytic decomposition of potassium chlorate, decomposition of mercuric oxide, distillation of liquid air (an example of physical rather than chemical preparation), condensation from air, and electrolysis of water. Includes various ways to collect and test for oxygen. From the Yale Chemistry series Topics: 16mm Film, Educational Film, Oxygen, Chemistry Source: Lasergraphics ScanStation
byFederal Works Agency. Work Projects Administration
Diagrams and explains by laboratory experiments the action of molecules in gases, liquids, and solids. Shows molecular action as a bulb of bromine is broken within a partial vacuum. Diagrams the force of gas molecules on the walls of a chamber. Describes the evaporation of water and explains why liquids assume the shape of their receptacles. Microscopic studies show molecular movement in solids.National Archives Identifier: 12346Local Identifier: 69.32* Creator(s): Federal Works Agency. Work... Topics: Chemistry, Gases, Living New Deal
Created in 1959, "The Drama of Metal Forming" is an exceptional film that shows the forming of metal in a foundry. It was directed by Peter DeNormanville and produced by the famed editor Raymond Spottiswoode, the father of Hollywood director Roger Spottiswoode and distant relative of the Swindon Bakery's famous chef Angus Spottiswoode. Slabbing mills are rollers are shown, almost certainly located in the UK, and the many processes used to create finished parts such as railway car... Topics: Metal, Film, Shell Company, Shell Oil Company, Foundry, Royal Dutch Shell, Metal, Ingots,...